gofer: Black must avoid losing Pf4 and then getting separated from Pf7. (i.e. 62 ... Kg2 63 Kxf4 h1=Q 64 Rx1 Kxh1 65 Kg3 winning) But what about Kg3? I think this is a draw by repetition or a draw because white loses Pf3 and has to swap off his rook to avoid Pf4 from
promotion!

JohnBoy: <Random>: I would personally like a bit more detail about how 57.Ra5 Kxf3 58.Rg5 works. Saying Rybka3 gives M23 does not help me a whole lot. It's the detail of corralling the pawns and avoiding stalemate (if 57...Kxh3 instead) that interests me.

A 62...f5+
A1 63.Rxf5? h1=Q =-
A2 63.Kxf5 Kxf3 64.Rxh2 and it seems it is a draw.
A3 63.Kxf4! With a obvious win.(for white)
B 62...Kg3 A trebuchet in a rook endgame!?
B1 63.Rg5+? Kh4 and a queen is in the making.
B2 63.Kd3 since a rook vs pawn endgame could soon arise, it seems logical.
B2a 63...Kg2 just gets checked.
B2b 63...Kxf3 64 Rxh2 Kg3 65 Kd5!drawing
B2c 63...h1=Q 64.Rxh1 Kg2 65.Rh5 seems to win for white.
Well, I can't see that far, But I am sure that it is a draw or more.

In general, the white rook will go after the h4 pawn and then sacrifice for the advancing black pawn on f1. The white king will go after the f7 pawn. The black king cannot stop the white h-pawn from promoting. Here are some possible playouts:

muralman: Geeeez I hate it when the player takes a different route. I was sure I missed it when I moved to Kg3, and forward from there. As soon as I saw Shirov take the King to Kg2, I walked away to find a more ego satisfying task.

doubledrooks: Black loses with 62...Kg2. But 62...Kg3! holds the draw.

Now if white plays a waiting move with the rook (such as 63. Rh7) then black follows with 63...f5+ 64. Kxf5 Kxf3 65. Rxh2 Kg3. The white king has gone past the black f pawn, and white is forced to give up the rook for the pawn.

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